body{
    position: relative;
}
.filter{
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,.7);
    overflow: hidden;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 15;
}
.m_p{
    text-align: center;
    margin-top: 10px;
}
.pswd{
    width: 275px;
    height: 400px;
    margin: 140px auto;
    background: rgba(255, 255, 255, .5);
    overflow: hidden;
    padding: 0 15px;
}
.pswd input{
    width: 100%;
    height: 40px!important;
    box-sizing: border-box;
    margin: 18px 0!important;
}
.btn_box{
    width: 100%;
    height: 45px;
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
}
.btn_box a{
    height: 80%;
    line-height: 26px;;
    width: 115px;
    box-sizing: border-box;
    text-align: center;
}